import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        StringBuilder str = new StringBuilder();
        int[] arri = new int[3];
        arri[0] = 5;
        System.out.println((int)Math.sqrt(5));
    }

}
